ES2022 JavaScript at() Method

Last Updated : 9 Oct, 2026

The at() method, introduced in ES2022, allows you to access elements of arrays, characters of strings, and elements of typed arrays using positive or negative indexes.

  • Positive indexes access elements from the beginning, starting at 0.
  • Negative indexes access elements from the end, with -1 referring to the last element.
  • It eliminates the need to use the length property to access the last elements.
  • It returns undefined when the specified index is out of range for an array.

Syntax:

array.at(index);

Parameter:

  • - index: The zero-based index of the element to retrieve. A negative index counts backward from the end.

Return value: Returns the element at the specified index. For strings, it returns a string containing the character at that position. If the index is out of range, it returns undefined.

Example 1: Using at() with an Array

JavaScript 
const array1 = [45, 46, 47, 48, 49];

console.log(array1.at(-1));
console.log(array1.at(1));

Output
49
46

In this example, at(-1) returns the last element, while at(1) returns the element at index 1.

Example 2: Accessing Elements from the End

JavaScript 
const strarr = ["apple", "ball", "cow", "dog", "elephant", "fish"];

console.log(strarr.at(-1));
console.log(strarr.at(-3));

Output
fish
dog

Here, at(-1) returns the last element ("fish"), and at(-3) returns the third element from the end ("dog").

Advantages of the at() Method

  • Improves readability when accessing elements from the end of an array.
  • Eliminates the need to calculate indexes using array.length - 1.
  • Provides a consistent way to access elements in arrays, strings, and typed arrays.
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